Space Heater

Space Heater produces a moderate amount of Heat in its immediate vicinity. It will stop working when environmental temperature reaches 70 °C (158 °F).

Tips (or rather, Disincentive to Use This Device)
Space Heaters are not particularly efficient at producing heat with only 150 DTU/s per Watt. Consider using Liquid Tepidizer (~4200 DTU/s per Watt), the Ice Maker (266 DTU per watt and also supplies useful Ice), or sourcing heat from natural sources (Geyser).

They also become next to obsolete after the colony has established piping for the output from electrolysis. The output gases from the process are hot; with careful channeling and choice of material for the piping, the gases can be used to heat things like plants that need high temperatures (e.g. Pincha Pepper) through the pipes before being routed elsewhere for use, storage or disposal.

Trivia
When active, the Space Heater plays the sound of the Florid Postern from Don't Starve Together, another game by Klei.

History
Обогреватель